Answers

Navigate to C:\Windows\System32\Tasks\Microsoft\Windows\PerfTrack and copy
BackgroundConfigSurveyor to a backup location.

Open regedit,
find HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\PerfTrack, right click it and export it to a backup location. Do the same for
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Plain. If something goes wrong, you can import these files to undo your changes.

Go back to the ...\PerfTrackregistry
key and look at the
BackgroundConfigSurveyor key inside it. It should contain a string called
Id. The value for
Id should be a big hexadecimal number inside curly braces. Find the key with the same name as this value inside
...\TaskCache\Plain and delete it.